RFR: 8244212: Optionally download media and webkit libraries from latest openjfx EA build

Fri Jun 12 23:28:38 UTC 2020

On Fri, 12 Jun 2020 23:21:16 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> I have tested on Linux (Fedora 31) only.
>> It works as intended (with one test failure due to 15-ea+4 being too old now).
>> 
>> UPDATE_STUB_CACHE suggests there is some magic available to help manage the stub cache.
>> But as I could not find anything about it, that section in the documentation may need some love.
>
> Tested on all three platforms with / without setting `STUB_RUNTIME_OPENJFX`. All looks good.

Pending review from @johanvos

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PR: https://git.openjdk.java.net/jfx/pull/202